I believe you can get the OEM M-performance software flash but I have not gotten confirmation from my dealer if that option is even available outside of purchasing the
X5 new with it. There are a bunch of tunes out there for this motor. Here is a starting link for Dinan flash for this car. 96hp for 3k

Dinan Cars - Stage 1 Performance Engine Software/Boost Upgrade - X5

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2012 X5 50i ZAP(2VA, 336, 465), ZTP, ZPP, ZPS(6VC), ZCW, ZRC, 322, 4UB, 4NC, 610
2011 ///M3 Silverstone II
2011 X5 50i(lemon)
-- SOLD --
08 550 Msport
07 X5 4.8I sport
04 545i sport
02 4.4i sport
01 540I M/sport
00 SL500
97 SL500